Waterloo, IL tornado history
36 tornadoes have passed within 10 miles of the center of Waterloo, IL from 1950 through 2025, according to the NOAA Storm Prediction Center, ranking 106th of 441 Illinois cities with a tornado on record. None was rated F3/EF3 or stronger by the National Weather Service. The most recent was on April 20, 2025 (EF0, 0.8-mile path); the strongest, on April 22, 2011, was rated EF2. SPC also logged 1 preliminary tornado report within 10 miles of the center of Waterloo, IL in 2026.
Dashed circle: 10 miles from the city's Census center point. A tornado counts when its recorded path passes inside the circle. Paths run straight from start to end point, as SPC records them.
Source: National Storms (nationalstorms.com), CC BY 4.0, data from NOAA Storm Prediction Center storm reports.
Every tornado within 10 miles of the center of Waterloo, IL
| Date | Rating | Path length | Deaths / injuries | Started in | Closest to center |
|---|---|---|---|---|---|
| Jul 11, 2026 | Prelim. report | – | – | Monroe County, IL | 8.6 mi |
| Apr 20, 2025 | EF0 | 0.8 mi | 0 / 0 | St. Clair County, IL | 7.4 mi |
| Apr 20, 2025 | EF1 | 0.3 mi | 0 / 0 | Monroe County, IL | 5.2 mi |
| Apr 20, 2025 | EF1 | 7.3 mi | 0 / 0 | Monroe County, IL | 2.2 mi |
| Mar 14, 2025 | EF1 | 14.7 mi | 0 / 0 | Monroe County, IL | 1.4 mi |
| May 26, 2024 | EF1 | 8.8 mi | 0 / 0 | St. Louis County, MO → IL | 8.8 mi |
| Apr 15, 2023 | EFU | 0.3 mi | 0 / 0 | Monroe County, IL | 8.9 mi |
| Apr 15, 2023 | EF0 | 5.0 mi | 0 / 0 | Monroe County, IL | 5.9 mi |
| Apr 15, 2023 | EF1 | 19.6 mi | 0 / 0 | Monroe County, IL | 5.6 mi |
| Jun 12, 2019 | EF0 | 0.5 mi | 0 / 0 | St. Clair County, IL | 9.0 mi |
| May 21, 2019 | EF0 | 0.3 mi | 0 / 0 | Monroe County, IL | 1.6 mi |
| Apr 22, 2011 | EF1 | 1.8 mi | 0 / 0 | St. Clair County, IL | 5.9 mi |
| Apr 22, 2011 | EF2 | 3.5 mi | 0 / 1 | Monroe County, IL | 0.5 mi |
| Apr 30, 2010 | EF0 | 0.1 mi | 0 / 0 | Monroe County, IL | 4.8 mi |
| Apr 30, 2010 | EF2 | 7.2 mi | 0 / 0 | Monroe County, IL | 7.4 mi |
| Jun 10, 2003 | F0 | 3.0 mi | 0 / 0 | Monroe County, IL | 2.7 mi |
| Jun 24, 2000 | F1 | 6.2 mi | 0 / 2 | St. Clair County, IL | 8.9 mi |
| Apr 15, 1998 | F0 | 16.0 mi | 0 / 0 | Monroe County, IL | 6.7 mi |
| Apr 19, 1996 | F0 | 1.0 mi | 0 / 0 | Monroe County, IL | 7.0 mi |
| May 18, 1995 | F1 | 4.8 mi | 0 / 0 | Monroe County, IL | 6.3 mi |
| May 18, 1995 | F0 | 0.4 mi | 0 / 0 | St. Clair County, IL | 8.3 mi |
| May 18, 1995 | F2 | 4.2 mi | 0 / 0 | Monroe County, IL | 5.8 mi |
| May 18, 1995 | F1 | 6.0 mi | 0 / 0 | Monroe County, IL | 2.3 mi |
| May 18, 1995 | F1 | 4.5 mi | 0 / 0 | Monroe County, IL | 1.5 mi |
| May 18, 1995 | F2 | 4.0 mi | 0 / 0 | Monroe County, IL | 3.8 mi |
| May 18, 1995 | F1 | 0.6 mi | 0 / 0 | Monroe County, IL | 0.8 mi |
| Apr 14, 1994 | F0 | 2.5 mi | 0 / 0 | Monroe County, IL | 1.1 mi |
| Apr 3, 1984 | F0 | 0.1 mi | 0 / 0 | Monroe County, IL | 0.8 mi |
| May 7, 1973 | F1 | 2.3 mi | 0 / 0 | Monroe County, IL | 8.3 mi |
| May 7, 1973 | F2 | 0.5 mi | 0 / 0 | St. Louis County, MO → IL | 9.3 mi |
| Apr 3, 1968 | F2 | 19.8 mi | 0 / 0 | Monroe County, IL | 4.8 mi |
| May 26, 1965 | F1 | 0.5 mi | 0 / 0 | Monroe County, IL | 9.0 mi |
| Mar 8, 1964 | F1 | 3.8 mi | 0 / 0 | Monroe County, IL | 5.6 mi |
| May 9, 1959 | F1 | 3.6 mi | 0 / 0 | Monroe County, IL | 7.9 mi |
| May 21, 1957 | F2 | 19.7 mi | 0 / 0 | Monroe County, IL | 6.0 mi |
| Apr 18, 1957 | F0 | 0.1 mi | 0 / 0 | Monroe County, IL | 6.4 mi |
| Sep 14, 1956 | F2 | 1.0 mi | 0 / 0 | St. Clair County, IL | 8.0 mi |
More: Monroe County tornadoes · Illinois tornado history · Waterloo hail history · Illinois damaging wind
Source: NOAA Storm Prediction Center (SPC) Severe Weather Database (SVRGIS) tornado file, 1950–2025, and SPC preliminary storm reports for 2026 (data through November 6, 2026). Ratings are the ones the National Weather Service assigned: Fujita (F) scale before Feb 1, 2007, Enhanced Fujita (EF) after. Paths are drawn as straight lines from the start to the end point SPC records; real paths curve. City and county boundaries: US Census Bureau.
NWS Damage Survey Paths Near Waterloo
The National Weather Service mapped the path of 11 tornadoes within 10 miles of Waterloo in damage surveys (5 EF1, 4 EF0, 2 EFU). On the map, those paths follow the survey, colored by the EF rating of each stretch, instead of a straight line from start to end.
| Date | Rating | Peak wind | Path length | Max width | Deaths / injuries | On the ground | Surveyed by |
|---|---|---|---|---|---|---|---|
| Jul 11, 2026 | EFU | – | 0.6 mi | – | 0 / 0 | 21:44–21:45 UTC | NWS St. Louis |
| Apr 20, 2025 | EF1 | 99 mph | 0.6 mi | 100 yd | 0 / 0 | 01:13 UTC | NWS St. Louis |
| Apr 20, 2025 | EF0 | 85 mph | 0.7 mi | 100 yd | 0 / 0 | 01:14 UTC | NWS St. Louis |
| Apr 20, 2025 | EF1 | 100 mph | 6.6 mi | 100 yd | 0 / 0 | 01:00–01:07 UTC | NWS St. Louis |
| Mar 14, 2025 | EF1 | 100 mph | 14.7 mi | 275 yd | 0 / 0 | 02:52–03:15 UTC | NWS St. Louis |
| May 26, 2024 | EF1 | 97 mph | 8.8 mi | 172 yd | 0 / 0 | 22:48–23:02 UTC | NWS St. Louis |
| Apr 15, 2023 | EF1 | 100 mph | 19.6 mi | 100 yd | 0 / 0 | 23:34–23:59 UTC | NWS St. Louis |
| Apr 15, 2023 | EFU | – | 0.3 mi | 25 yd | 0 / 0 | 23:43 UTC | NWS St. Louis |
| Apr 15, 2023 | EF0 | 85 mph | 5.0 mi | 100 yd | 0 / 0 | 23:39–23:46 UTC | NWS St. Louis |
| Jun 12, 2019 | EF0 | 74 mph | 0.5 mi | 10 yd | 0 / 0 | 23:14–23:17 UTC | NWS St. Louis |
| May 21, 2019 | EF0 | 85 mph | 0.4 mi | 50 yd | 0 / 0 | 00:01–00:02 UTC | NWS St. Louis |
Source: NOAA National Weather Service Damage Assessment Toolkit (DAT): the tornado paths and EF-rating zones NWS survey teams mapped after each storm. Survey data are preliminary and can be revised; NOAA's official record is Storm Data (NCEI). Paths are simplified to about 30 m. Times are when the tornado was on the ground, in UTC.